diff --git a/postgresql-libpq.cabal b/postgresql-libpq.cabal
index ef50a54..df91e7c 100644
--- a/postgresql-libpq.cabal
+++ b/postgresql-libpq.cabal
@@ -71,7 +71,7 @@ library
     build-depends: unix >=2.4.2.0 && <2.8
 
   if os(windows)
-    build-depends: Win32 >=2.2.0.2 && <2.11
+    build-depends: Win32 >=2.2.0.2 && <2.14
 
   ghc-options:      -Wall